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BS_PHENOL.for
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!======================================================================
! BS_PHENOL, Subroutine
!
! Determines Phenological Stage and Growing Degree Days for Sugarbeet
!----------------------------------------------------------------------
! Revision history
!
! Written
! 04/15/2015 Model developed by Mohammad J Anar based on CERES-Beet model developed by Leviel et al. 2000
!----------------------------------------------------------------------
SUBROUTINE BS_PHENOL(DYNAMIC,ISWWAT,FILEIO,IDETO, !C
& CUMDEP,DAYL,DLAYR,LEAFNO,LL,NLAYR,PLTPOP,SDEPTH, !I
& SI1,SI3,SNOW, SRAD,SUMP,SW,TMAX,TMIN, TWILEN, !I
& XN,YRDOY,YRSIM, !I
& CUMDTT,DTT,EARS,GPP,ISDATE, ISTAGE,MDATE,STGDOY,SUMDTT, !O
& XNTI,TLNO,XSTAGE,YREMRG,RUE,KCAN,KEP, P3, TSEN, CDAY, !O
& SeedFrac, VegFrac) !O
USE ModuleDefs
IMPLICIT NONE
SAVE
!----------------------------------------------------------------------
! Define Variables
!----------------------------------------------------------------------
INTEGER DYNAMIC
! REAL ABSTRES
REAL ACOEF
REAL BARFAC
CHARACTER*1 BLANK
REAL C1
INTEGER CDAY
REAL CUMDEP
REAL CUMDTT
REAL DAYL
REAL DEC
REAL DGET
REAL DJTI
REAL DLAYR(NL)
REAL DLV
REAL DOPT
REAL DSGT
REAL DSGFT
REAL DTT
REAL DUMMY
REAL EARS
CHARACTER*6 ECONO
INTEGER ERR
CHARACTER*6 ERRKEY
PARAMETER (ERRKEY='BSPHEN')
INTEGER ERRNUM
CHARACTER*12 FILEC
CHARACTER*12 FILES
CHARACTER*12 FILEE
CHARACTER*92 FILEGC
CHARACTER*30 FILEIO
INTEGER FOUND
REAL G2
REAL G3
REAL GDDE
REAL GPP
INTEGER I
CHARACTER*1 IDETO
INTEGER IDURP
INTEGER ISTAGE
CHARACTER*1 ISWWAT
REAL ISOW
REAL KCAN
REAL KEP
INTEGER LEAFNO
INTEGER L
INTEGER L0
INTEGER LINC
REAL LL(NL)
INTEGER LNUM
INTEGER LUNIO
INTEGER MDATE
INTEGER NDAS
INTEGER NLAYR
INTEGER NOUTDO
REAL P1
REAL P2
REAL P2O
REAL P3
REAL P5
REAL P9
CHARACTER*80 PATHCR
CHARACTER*80 PATHSR
CHARACTER*80 PATHER
REAL PDTT
REAL PHINT
REAL PLTPOP
REAL PSKER
REAL RATEIN
REAL ROPT
REAL RUE
REAL SDEPTH
CHARACTER*6 SECTION
REAL S1
REAL SI1(6)
REAL SI3(6)
REAL SIND
REAL SNDN
REAL SNOW
REAL SNUP
REAL SRAD
INTEGER STGDOY(20)
REAL SUMDTT
REAL SUMDTT_2 !introduced for plant P routine
REAL SUMP
REAL SW(NL)
REAL SWCG
REAL SWSD
REAL TBASE
REAL TDSOIL
REAL TEMPCN
REAL TEMPCR
REAL TEMPCX
REAL TH
REAL TLNO
REAL TMAX
REAL TMIN
REAL TMSOIL
REAL TNSOIL
REAL TOPT
REAL TSEN !10/12/2005 chp
REAL TWILEN
CHARACTER*6 VARNO
CHARACTER*16 VRNAME
REAL XN
REAL XNTI
REAL XS
REAL XSTAGE
INTEGER YRDOY
INTEGER YREMRG
INTEGER YRSIM
INTEGER ISDATE
INTEGER PATHL
PARAMETER (BLANK = ' ')
INTEGER LUNECO
CHARACTER*6 ECOTYP
INTEGER ISECT
CHARACTER*255 C255
CHARACTER*16 ECONAM
INTEGER LUNCRP
CHARACTER*92 FILECC
CHARACTER*80 C80
CHARACTER*78 MESSAGE(10)
! CHP added for P model
REAL SeedFrac, VegFrac
!----------------------------------------------------------------------
! DYNAMIC = RUNINIT OR DYNAMIC = SEASINIT
! ---------------------------------------------------------------------
IF (DYNAMIC.EQ.RUNINIT .OR. DYNAMIC.EQ.SEASINIT) THEN
! Do this just once in RUNINIT
IF (DYNAMIC .EQ. RUNINIT) THEN
CALL GETLUN('OUTO', NOUTDO)
!-------------------------------------------------------
! Read input file name (ie. DSSAT45.INP) and path
!-------------------------------------------------------
CALL GETLUN('FILEIO', LUNIO)
OPEN (LUNIO, FILE = FILEIO,STATUS = 'OLD',IOSTAT=ERR)
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,0)
READ(LUNIO,50,IOSTAT=ERR) FILES, PATHSR; LNUM = 7
50 FORMAT(//////,15X,A12,1X,A80)
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,LNUM)
READ(LUNIO,51,IOSTAT=ERR) FILEE, PATHER; LNUM = LNUM + 1
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,LNUM)
51 FORMAT(15X,A12,1X,A80)
READ(LUNIO,51,IOSTAT=ERR) FILEC, PATHCR; LNUM = LNUM + 1
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,LNUM)
!------------------------------------------------------
! Read Planting Details Section
!------------------------------------------------------
SECTION = '*PLANT'
CALL FIND(LUNIO, SECTION, LINC, FOUND) ; LNUM = LNUM + LINC
IF (FOUND .EQ. 0) THEN
CALL ERROR(SECTION, 42, FILEIO, LNUM)
ELSE
! READ(LUNIO,60,IOSTAT=ERR) PLTPOP,SDEPTH
READ(LUNIO,60,IOSTAT=ERR) YREMRG,PLTPOP,SDEPTH
LNUM = LNUM + 1
! 60 FORMAT(25X,F5.2,25X,F5.2)
60 FORMAT(11X,I7,7X,F5.2,25X,F5.2)
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,LNUM)
ENDIF
! -----------------------------------------------------------------
! Read crop cultivar coefficients
! -----------------------------------------------------------------
SECTION = '*CULTI'
CALL FIND(LUNIO, SECTION, LINC, FOUND) ; LNUM = LNUM + LINC
IF (FOUND .EQ. 0) THEN
CALL ERROR(SECTION, 42, FILEIO, LNUM)
ELSE
READ (LUNIO,1800,IOSTAT=ERR) VARNO,VRNAME,ECONO,
% P1,P2,P5,G2,G3,PHINT ; LNUM = LNUM + 1
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILEIO,LNUM)
1800 FORMAT (A6,1X,A16,1X,A6,1X,6F6.0)
ENDIF
CLOSE(LUNIO)
! -----------------------------------------------------------------
! Read Species Coefficients
! -----------------------------------------------------------------
FILECC = TRIM(PATHSR) // FILES
CALL GETLUN('FILEC', LUNCRP)
OPEN (LUNCRP,FILE = FILECC, STATUS = 'OLD',IOSTAT=ERR)
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILECC,0)
! ----------------------------------------------------------------
! Find and Read TEMPERATURE Section
! ----------------------------------------------------------------
SECTION = '*SEED '
CALL FIND(LUNCRP, SECTION, LNUM, FOUND)
IF (FOUND .EQ. 0) THEN
CALL ERROR(SECTION, 42, FILECC, LNUM)
ELSE
CALL IGNORE(LUNCRP,LNUM,ISECT,C80)
CALL IGNORE(LUNCRP,LNUM,ISECT,C80)
CALL IGNORE(LUNCRP,LNUM,ISECT,C80)
CALL IGNORE(LUNCRP,LNUM,ISECT,C80)
CALL IGNORE(LUNCRP,LNUM,ISECT,C80)
READ(C80,'(9X,F7.3)',IOSTAT=ERR) DSGT
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILECC,LNUM)
CALL IGNORE(LUNCRP,LNUM,ISECT,C80)
READ(C80,'(9X,F7.3)',IOSTAT=ERR) DGET
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILECC,LNUM)
CALL IGNORE(LUNCRP,LNUM,ISECT,C80)
READ(C80,'(9X,F7.3)',IOSTAT=ERR) SWCG
IF (ERR .NE. 0) CALL ERROR(ERRKEY,ERR,FILECC,LNUM)
ENDIF
CLOSE(LUNCRP)
!-----------------------------------------------------------------------
! Open Ecotype File FILEE
!-----------------------------------------------------------------------
LNUM = 0
PATHL = INDEX(PATHER,BLANK)
IF (PATHL .LE. 1) THEN
FILEGC = FILEE
ELSE
FILEGC = PATHER(1:(PATHL-1)) // FILEE
ENDIF
!-----------------------------------------------------------------------
! Read Ecotype Parameter File
!-----------------------------------------------------------------------
CALL GETLUN('FILEE', LUNECO)
OPEN (LUNECO,FILE = FILEGC,STATUS = 'OLD',IOSTAT=ERRNUM)
IF (ERRNUM .NE. 0) CALL ERROR(ERRKEY,ERRNUM,FILEE,0)
ECOTYP = ' '
LNUM = 0
DO WHILE (ECOTYP .NE. ECONO)
CALL IGNORE(LUNECO, LNUM, ISECT, C255)
IF (ISECT .EQ. 1 .AND. C255(1:1) .NE. ' ' .AND.
& C255(1:1) .NE. '*') THEN
READ(C255,3100,IOSTAT=ERRNUM) ECOTYP,ECONAM,TBASE,TOPT,
& ROPT,P2O,DJTI,GDDE,DSGFT,RUE, KCAN
3100 FORMAT (A6,1X,A16,1X,9(1X,F5.1))
IF (ERRNUM .NE. 0) CALL ERROR(ERRKEY,ERRNUM,FILEE,LNUM)
IF (ECOTYP .EQ. ECONO) THEN
! Read optional cold sensitivity paramter.
! Default to TSEN = 6.0 if no value given.
IF (C255(80:84) == ' ') THEN
TSEN = 6.0
ELSE
READ(C255(80:84),'(F5.0)',IOSTAT=ERRNUM) TSEN
IF (ERRNUM .NE. 0 .OR. TSEN < 1.E-6) TSEN = 6.0
ENDIF
! Read optional number of cold days paramter.
! Default to CDAY = 15.0 if no value given.
IF (C255(86:90) == ' ') THEN
CDAY = 15
ELSE
READ(C255(86:90),'(I5)',IOSTAT=ERRNUM) CDAY
IF (ERRNUM .NE. 0 .OR. CDAY < 0) CDAY = 15
ENDIF
EXIT
ENDIF
ELSEIF (ISECT .EQ. 0) THEN
CALL ERROR(ERRKEY,7,FILEE,LNUM)
ENDIF
ENDDO
CLOSE (LUNECO)
ENDIF
KEP = KCAN/(1-0.07)*(1-0.25)
DO I=1,20
STGDOY(I) = 9999999
ENDDO
STGDOY(14) = YRSIM
! YREMRG = 9999999
YREMRG = -99 !CHP 5/19/2011
CUMDTT = 0.0
SUMDTT = 0.0
DTT = 0.0
GPP = 0.0
ISTAGE = 7
XSTAGE = 0.1
MDATE = -99
DUMMY = 0
ISDATE = 0
TNSOIL = 0.0
TMSOIL = 0.0
TH = 00.0
TEMPCX = 0.
TEMPCR = 0.0
TDSOIL = 0.0
SWSD = 0.0
SNUP = 0.0
SNDN = 0.0
S1 = 0.0
RATEIN = 0.0
PSKER = 0.0
PDTT = 0.0
P9 = 0.0
P3 = 0.0
NDAS = 0.0
L0 = 0.0
L = 0
DLV = 0.0
DEC = 0.0
C1 = 0.0
ACOEF = 0.0
DOPT = 0.0
SeedFrac = 0.0
VegFrac = 0.0
!----------------------------------------------------------------------
! DYNAMIC = RATE OR INTEGRATE
! ---------------------------------------------------------------------
ELSE
! -------------------------------------------------------------
! Compute Crown Temperature under snow pack.
! Used in COLD.FOR
! -------------------------------------------------------------
! TEMPCN = crown temperature when snow is present and
! TMIN < 0. This function computes crown temperature
! as higher than TMIN, C.
! TEMPCX = crown temp. for max. development rate, C
! SNOW = Snow depth, mm
! XS = temporary snow depth variable, mm
TEMPCN = TMIN
TEMPCX = TMAX
XS = SNOW
XS = AMIN1 (XS,15.0)
!------------------------------------------------------------
! Calculate crown temperature based on temperature and
! snow cover. Crown temperature is higher than TAVG due
! to energy balance of snow pack.
!------------------------------------------------------------
IF (TMIN .LT. 0.0) THEN
TEMPCN = 2.0 + TMIN*(0.4+0.0018*(XS-15.0)**2)
ENDIF
IF (TMAX .LT. 0.0) THEN
TEMPCX = 2.0 + TMAX*(0.4+0.0018*(XS-15.0)**2)
ENDIF
TEMPCR = (TEMPCX + TEMPCN)/2.0
!------------------------------------------------------------
! Compute thermal time based on new method developed by J.T.R
! at CYMMIT, 5/5/98. TBASE, TOPT, and ROPT are read in
! from the species file.
!------------------------------------------------------------
! DOPT, Devlopment optimum temperature, is set to TOPT
! during vegetative growth and to ROPT after anthesis
DOPT = TOPT
IF ((ISTAGE .GT. 3) .AND. (ISTAGE .LE. 6)) THEN
DOPT = ROPT
ENDIF
! Check basic temperature ranges and calculate DTT for
! development based on PC with JTR
IF (TMAX .LT. TBASE) THEN
DTT = 0.0
ELSEIF (TMIN .GT. DOPT) THEN
! !
!This statement replaces DTT = TOPT .. GoL and LAH, CIMMYT, 1999
! !
DTT = DOPT - TBASE
! !
!Now, modify TEMPCN, TEMPCX based on soil conditions or snow
! ! If wheat and barley is before terminal spiklett stage
! ! Or if corn and sorghum are before 10 leaves
! !
ELSEIF (LEAFNO.LE.10) THEN
!Check for snow (should following be GT.0 or GT.15 ?).
! !Based on snow cover, calculate DTT for the day
! !
IF (XS .GT. 0.0) THEN
! !
! ! Snow on the ground
! !
DTT = (TEMPCN + TEMPCX)/2.0 - TBASE
ELSE
! !
! ! No snow, compute soil temperature
! !
ACOEF = 0.01061 * SRAD + 0.5902
TDSOIL = ACOEF * TMAX + (1.0 - ACOEF) * TMIN
TNSOIL = 0.36354 * TMAX + 0.63646 * TMIN
IF (TDSOIL .LT. TBASE) THEN
DTT = 0.0
ELSE
IF (TNSOIL .LT. TBASE) THEN
TNSOIL = TBASE
ENDIF
IF (TDSOIL .GT. DOPT) THEN
TDSOIL = DOPT
ENDIF
!Import DAYL from WEATHR module. chp 5-6-02
!CALL DAYLEN (DOY,XLAT,DAYL,DEC,SNDN,SNUP)
TMSOIL = TDSOIL * (DAYL/24.) +
& TNSOIL * ((24.-DAYL)/24.)
IF (TMSOIL .LT. TBASE) THEN
DTT = (TBASE+TDSOIL)/2.0 - TBASE
ELSE
DTT = (TNSOIL+TDSOIL)/2.0 - TBASE
ENDIF
! !
! ! Statement added ... GoL and LAH, CIMMYT, 1999
! !
DTT = AMIN1 (DTT,DOPT-TBASE)
ENDIF
ENDIF
!
! Now, compute DTT for when Tmax or Tmin out of range
!
ELSEIF (TMIN .LT. TBASE .OR. TMAX .GT. DOPT) THEN
DTT = 0.0
DO I = 1, 24
TH = (TMAX+TMIN)/2. + (TMAX-TMIN)/2. * SIN(3.14/12.*I)
IF (TH .LT. TBASE) THEN
TH = TBASE
ENDIF
IF (TH .GT. DOPT) THEN
TH = DOPT
ENDIF
DTT = DTT + (TH-TBASE)/24.0
END DO
ELSE
DTT = (TMAX+TMIN)/2.0 - TBASE
ENDIF
DTT = AMAX1 (DTT,0.0)
SUMDTT = SUMDTT + DTT
CUMDTT = CUMDTT + DTT
! ------------------------------------------------------------------
! ISTAGE Definitions
!
! 7 - Sowing date
! 8 - Germination
! 9 - Emergence
! 1 - End juvenile
! 2 - Pannicle initiation
! 3 - End leaf growth
! 4 - Beginning effective growth
! 5 - Effective Growth
! 6 - Maturity
! ----------------------------------------------------------
!---------------------------------------------------------
! ISTAGE = 7 - Determine sowing date
!---------------------------------------------------------
IF (ISTAGE .EQ. 7) THEN
STGDOY(ISTAGE) = YRDOY
NDAS = 0.0
ISTAGE = 8
SUMDTT = 0.0
IF (ISWWAT .EQ. 'N') RETURN
!---------------------------------------------------------
! New Growth Stage Occurred Today. Initialize Some Varia
!---------------------------------------------------------
CUMDEP = 0.0
DO L = 1, NLAYR
CUMDEP = CUMDEP + DLAYR(L)
IF (SDEPTH .LT. CUMDEP) GO TO 100 ! Was EXIT
END DO
100 CONTINUE ! Sun Fix
L0 = L !L0 is layer that seed is in.
RETURN
!-----------------------------------------------------------------
! ISTAGE = 8 - Determine Germination Date
!-----------------------------------------------------------------
ELSEIF (ISTAGE .EQ. 8) THEN
IF (ISWWAT .NE. 'N') THEN
IF (SW(L0) .LE. LL(L0)) THEN
SWSD = (SW(L0)-LL(L0))*0.65 +
& (SW(L0+1)-LL(L0+1))*0.35
NDAS = NDAS + 1
IF (NDAS .GE. DSGT) THEN
ISTAGE = 6
PLTPOP = 0.00
GPP = 1.0
WRITE(MESSAGE(1),3500)
CALL WARNING(1,'BSPHEN',MESSAGE)
WRITE ( *,3500)
IF (IDETO .EQ. 'Y') THEN
WRITE (NOUTDO,3500)
ENDIF
MDATE = YRDOY
RETURN
ENDIF
!Germinate when soil water > 0.02 cm3/cm3
IF (SWSD .LT. SWCG) RETURN
ENDIF
ENDIF
!---------------------------------------------------------
! New Growth Stage Occurred Today. Initialize Some Varia
!---------------------------------------------------------
STGDOY(ISTAGE) = YRDOY
ISTAGE = 9
CUMDTT = 0.0
SUMDTT = 0.0
P9 = GDDE*ISOW-450.
RETURN
!-----------------------------------------------------------------
! ISTAGE = 9 - Determine Seedling Emergence Date
!-----------------------------------------------------------------
ELSEIF (ISTAGE .EQ. 9) THEN
NDAS = NDAS + 1
! Emerge when P9 GDD's have been accumulated
! IF (SUMDTT .LT. P9) RETURN
IF (YREMRG .LE. 0) THEN
IF (SUMDTT .LT. P9) RETURN
ELSE
IF (YRDOY .LT. YREMRG) RETURN
ENDIF
IF (P9 .GT. DGET) THEN
ISTAGE = 6
PLTPOP = 0.00
GPP = 1.0
WRITE(MESSAGE(1),1399)
CALL WARNING(1,'BSPHEN',MESSAGE)
WRITE ( *,1399)
IF (IDETO .EQ. 'Y') THEN
WRITE (NOUTDO,1399)
ENDIF
MDATE = YRDOY
RETURN
ENDIF
!---------------------------------------------------------
! New Growth Stage Occurred Today. Initialize Some Varia
!---------------------------------------------------------
STGDOY(ISTAGE) = YRDOY
ISTAGE = 1
SUMDTT = SUMDTT - P9
P3 = 400.
YREMRG = STGDOY(9) !Passed back into water balance routi
RETURN
!-----------------------------------------------------------------
! ISTAGE = 1 - Emergence to End of Juvenile Stage
!-----------------------------------------------------------------
ELSEIF (ISTAGE .EQ. 1) THEN
NDAS = NDAS + 1 !NDAS - number of days after sowing
XSTAGE = SUMDTT/P1 !XSTAGE - noninteger growth stage (0-1
VegFrac = SUMDTT / (P1 + 25. * (DOPT - TBASE))
IF (SUMDTT .LT. P1) RETURN
!---------------------------------------------------------
! New Growth Stage Occurred Today. Initialize Some Varia
!---------------------------------------------------------
STGDOY(ISTAGE) = YRDOY
ISTAGE = 2
SIND = 0.0
!-----------------------------------------------------------------
! ISTAGE = 2 - End of Juvenile Stage to Tassel Initiation
!-----------------------------------------------------------------
ELSEIF (ISTAGE .EQ. 2) THEN
!NDAS - number of days after sowing
NDAS = NDAS + 1
XSTAGE = 1.0 + 0.5*SIND ! Used to compute N demand.
PDTT = DTT
IF (ISWWAT .EQ. 'N') THEN
DUMMY = DUMMY + 1
ENDIF
IF (DUMMY .EQ. 1) THEN
PDTT = SUMDTT - P1
ENDIF
VegFrac = MAX(VegFrac,SUMDTT / (P1 + 25. *(DOPT - TBASE)))
!RATEIN - floral rate of development driven by daylength
! and photoperiod sensitivity value for maize (different
! for SG, ML
!TWILEN = AMAX1 (TWILEN,P2O)
IF (TWILEN .GT. P2O) THEN
RATEIN = 1.0/(DJTI+P2*(TWILEN-P2O))
ELSE
RATEIN = 1.0 / DJTI
ENDIF
PDTT = 1.0
SIND = SIND + RATEIN
!Return if panicle initiation has not been reached
IF (SIND .LT. 1.0) RETURN
!---------------------------------------------------------
! New Growth Stage Occurred Today. Initialize Some Varia
!---------------------------------------------------------
STGDOY(ISTAGE) = YRDOY
ISTAGE = 3
XNTI = SUMDTT/43.0
!Next 2 lines: Change implemented at CIMMYT 1999 - JTR,US
TLNO = (SUMDTT/21.0+6.0)
P3 = ((TLNO - 2.) * PHINT)+96. - SUMDTT
XNTI = XN
! chp 5/11/2005
SUMDTT_2 = SUMDTT !SUMDTT_2 = P1 + P2
VegFrac = MAX(VegFrac,SUMDTT_2 / (SUMDTT_2 + P3 + DSGFT))
SUMDTT = 0.0
!-----------------------------------------------------------------
! ISTAGE = 3 - Tassel Initiation to End of Leaf Growth
!-----------------------------------------------------------------
ELSEIF (ISTAGE .EQ. 3) THEN
! NDAS - number of days after sowing
NDAS = NDAS + 1
XSTAGE = 1.5 + 3.0*SUMDTT/P3
VegFrac = MAX(VegFrac,(SUMDTT + SUMDTT_2) / (SUMDTT_2+P3))
IF (SUMDTT .LT. 0.8*P3) RETURN
!---------------------------------------------------------
! New Growth Stage Occurred Today. Initialize Some Varia
!---------------------------------------------------------
STGDOY(ISTAGE) = YRDOY
ISDATE = YRDOY
ISTAGE = 4
SUMDTT = SUMDTT - P3
IDURP = 0
! CHP 5/25/2007 Move inflection point back to end of stage 3
VegFrac = 1.0
!-----------------------------------------------------------------
! ISTAGE = 4:End of Leaf Growth to Beginning Effective Growth
!-----------------------------------------------------------------
ELSEIF (ISTAGE .EQ. 4) THEN
NDAS = NDAS + 1
IDURP = IDURP + 1
XSTAGE = 4.5+5.5*SUMDTT/P5
! CHP 5/25/2007 Move inflection point back to end of stage 3
SeedFrac = SUMDTT / P5
IF (SUMDTT .LT. DSGFT) RETURN
!---------------------------------------------------------
! New Growth Stage Occurred Today. Initialize Some Varia
!---------------------------------------------------------
! When Silking phase ends and beginning of effective growth
! begins. Compute grains per plant, ears per pla
! and barrenness
PSKER = SUMP*1000.0/IDURP*3.4/5.0
GPP = G2*(PSKER-195.)/(1213.2+PSKER-195.)
GPP = AMIN1 (GPP, G2)
GPP = AMAX1 (GPP,0.0)
EARS = PLTPOP
GPP = AMAX1 (GPP,51.0)
!
IF (GPP .LT. G2*0.55) THEN
EARS = PLTPOP*((GPP-50.)/(G2-50.))**0.33
ENDIF
EARS = AMAX1 (EARS,0.0)
STGDOY(ISTAGE) = YRDOY
ISTAGE = 5
!-----------------------------------------------------------------
! ISTAGE = 5 - Effective Growth Period
!-----------------------------------------------------------------
ELSEIF (ISTAGE .EQ. 5) THEN
NDAS = NDAS + 1
XSTAGE = 4.5 + 5.5*SUMDTT/P5
SeedFrac = SUMDTT / P5
IF (SUMDTT .LT. P5*0.95) RETURN !End of EFP assumed to be 95%
!-------------------------------------------------------------
! New Growth Stage Occurred Today. Initialize Some Variables
!-------------------------------------------------------------
STGDOY (ISTAGE) = YRDOY
ISTAGE = 6
!-----------------------------------------------------------------
! ISTAGE = 6 - Physiological Maturity
!-----------------------------------------------------------------
ELSEIF (ISTAGE .EQ. 6) THEN
IF (DTT .LT. 2.0) SUMDTT = P5
IF (SUMDTT .LT. P5) RETURN
!---------------------------------------------------------
! New Growth Stage Occurred Today. Initialize Some Varia
!---------------------------------------------------------
STGDOY(ISTAGE) = YRDOY
MDATE = YRDOY
!ISTAGE = 7
ISTAGE = 10 !CHP - Prevents growth parameters from being
! set back to initial values. 08/11/03
CUMDTT = 0.0
DTT = 0.0
IF (PLTPOP .NE. 0.0) THEN
IF (GPP .LE. 0.0) THEN
GPP = 1.0
ENDIF
ENDIF
! chp 5/11/2005
SeedFrac = 1.0
! ----------------------------------------------------------------------
ENDIF ! End ISTAGE Loop
! ----------------------------------------------------------------------
ENDIF ! End DYNAMIC STRUCTURE
RETURN
!-----------------------------------------------------------------------
! Format Strings
!-----------------------------------------------------------------------
1399 FORMAT (10X,'Seed ran out of metabolite due to deep planting')
3500 FORMAT ('Crop failure because of lack of germination ',
& 'within 15 days of sowing')
END SUBROUTINE BS_PHENOL
! DYNAMIC Modular control
! ABSTRES Maximum of water stress stage 1 and 3
! ACOEF Coefficient
! BARFAC Factor to reduce ears/plant under high populations (barrenn
! C1 Used to comptue daylength (computed in maize.for)
! CUMDEP Cumulative depth of soil, cm
! CUMDTT Cumulative daily thermal time after germination, C
! DAYL Daylength, hours
! DEC Used to compute daylength
! DGET Threshold defined as growing degree days between germination and emergence.
! If this threshold is exceeded, crop failure ocurrs.
! DJTI Minimum days from end of juvenile stage to tassel initiation if the cultivar
! is not photoperiod sensitive, DJTI
! DLAYR(L) Soil thickness in layer L (cm)
! DLV Used to compute daylength
! DOPT Development optimum temperature
! DSGFT GDD from silking to effective grain filling period, C
! DSGT Maximum number of days from sowing to germination before crop failure occurs.
! DTT Growing degree days today, C
! DUMMY Temporary variable
! EARS Ears per m2, computed here and used in grosub.
! ECONO Ecotype number for the variety (not really used in maize ye
! ERR Determines if error in reading file (0=ok, 1=error)
! ERRKEY Variable containing routine where error occurred
! (ERRKEY='BS_PHENL')
! FILEC Filename of .SPE or species file
! FILEIO Filename containing model inputs (IBSNAT35.INP)
! FOUND Indicates if a section in a file is found
! G2 Potential kernel number, kernels/plant
! G3 Potential kernel growth rate mg/kernel/day
! GDDE Growing degree days per cm seed depth required for emergence, GDD/cm
! GPP Grain number per plant, grains/plant
! I Loop counter
! IDETO Screen output switch (Y/N)
! IDURP Duration of ISTAGE 4, calendar days
! ISTAGE Growth stage
! ISWWAT Water balance switch (Y/N)
! LEAFNO Number of oldest leaf per plant (same as XN)
! L Loop counter
! L0 Temporary soil layer number
! LINC Indicates if a line is a good line
! LL(NL) Soil water lower limit, cm3/cm3
! LNUM Line number in an input file
! LUNIO Logical input number for model input file
! LUNIO Assign value to LUNIO for local use.
! MDATE Year and day of year of maturity
! NDAS Number of days after sowing
! NLAYR Number of soil layers
! NOUTDO Output file number
! P1 GDD from seedling emergence to end of juvenile phase, C
! P2 Photoperiod sensitivity coefficient, 1/hr
! P2O Minimum daylength below which daylength does not affect dev
! P3 Cumulative GDD required to complete ISTAGE 3, C
! P5 GDD from silking to physiological maturity, C
! P9 Growing degree days from germination to emergence, C
! PATHCR Pathname of species file
! DTT
! PHINT Phyllochron interval. Number of GDD required for new leaf e
! PLTPOP Plant population, no./m2
! PSKER Average rate of photosynthesis during ISTAGE 4
! RATEIN Rate of floral induction
! ROPT Second optimum temperature for development from species fil
! SDEPTH Sowing depth, cm
! SECTION Temporary variable used to identify section in a file
! S1 Used to compute daylength (computed in maize.for)
! SI1(6) Water stress during a growth stage used for output
! SI3(6) Water stress during a growth stage used for output
! SIND Summed photoperiod induction rate
! SNDN Sun down
! SNOW Snow, mm
! SNUP Sun up
! SRAD Daily solar radiation, MJ/m2/day
! STGDOY(20) Year and day of year that a growth stage occurred on
! SUMDTT Sum of GDD for a given stage, C
! SUMP Cumulative plant growth during ISTAGE 4, g/plant
! SW(NL) Soil water content in layer, cm3/cm3
! SWCG Minimum soil water available required for germination to occur, cm3/cm3
! SWSD Modified soil water content for computing emergence
! TBASE Base temperature for development from ecotype file, C
! TDSOIL Weighted average soil temperature, C
! TEMPCN Crown temperature when snow is present and TMIN < 0. This f
! computes crown temperature as higher than TMIN, C.
! TEMPCR Crown temperature, C
! TEMPCX Crown temperature for maximum development rate, C
! TH Intermedate variable for computing GDD today, C
! TLNO Total leaf numbers that will eventually develop
! TMAX Daily maximum temperature, C
! TMIN Daily minimum temperature, C
! TMSOIL Weighted average soil temperature, C
! TNSOIL Weighted average soil temperture, C
! TOPT Optimum temperature for development from species file, C
! TWILEN Twilight definition of daylength
! VARNO Variety identification number
! VRNAME Variety name
! WTHADJ(2,8)Note, used here, but not passed into maize.for from cropgro
! WMODB*1 Note, used here, but not passed into maize.for from cropgro
! XLAT Latitude
! XN Number of oldest expanding leaf
! XNTI Number of leaves at tassel initiation (used in grosub)
! XS Temporary snow depth variable
! XSTAGE Non-integer growth stage indicator
! YRDOY Year and day of year
! YREMRG Year and day of year of emergence (passed back to water bal
! YRSIM Year and day of year of first day of simulation